1 files changed, 43 insertions, 0 deletions
diff --git a/extension/react-app/src/util/index.ts b/extension/react-app/src/util/index.ts
new file mode 100644
index 00000000..c4168e13
--- /dev/null
+++ b/extension/react-app/src/util/index.ts
@@ -0,0 +1,43 @@
+type Platform = "mac" | "linux" | "windows" | "unknown";
+
+export function getPlatform(): Platform {
+  const platform = window.navigator.platform.toUpperCase();
+  if (platform.indexOf("MAC") >= 0) {
+    return "mac";
+  } else if (platform.indexOf("LINUX") >= 0) {
+    return "linux";
+  } else if (platform.indexOf("WIN") >= 0) {
+    return "windows";
+  } else {
+    return "unknown";
+  }
+}
+
+export function isMetaEquivalentKeyPressed(event: {
+  metaKey: boolean;
+  ctrlKey: boolean;
+}): boolean {
+  const platform = getPlatform();
+  switch (platform) {
+    case "mac":
+      return event.metaKey;
+    case "linux":
+    case "windows":
+      return event.ctrlKey;
+    default:
+      return event.metaKey;
+  }
+}
+
+export function getMetaKeyLabel(): string {
+  const platform = getPlatform();
+  switch (platform) {
+    case "mac":
+      return "⌘";
+    case "linux":
+    case "windows":
+      return "^";
+    default:
+      return "⌘";
+  }
+}